Tying and Fishing Tailwater Flies by Pat Dorsey is my favorite...lots of great patterns that have helped me tremendously this year! I'd also suggest getting on the web and going to Youtube for video tutorials!

Alex is probably right. But as far as books with basic tutorials/instructions I use Tying Trout Flies by C. Boyd Pfeiffer I got at Half Priced Books, Essential Trout Flies by Dave Hughes, and Nymphs Tying and Fishing by Larry Tullis has some basic information.

I really like Barr Flies by John Barr, designed the Copper John, and flies that Ron McAlpin ties, esp. the BWO emerger.

Larry

"None of us ever dies if the deeds we've done continue to do good in a world where trout still swim." Dave Hughes

I’ve only been tying a couple of years but have really jumped in. I agree with Alex that K.I.S.S. in the beginning is a really good idea. Resist the urge to buy a lot of exotic, expensive materials until you get skills developed; it’s cheaper just to buy #20 Adams. Excellent flies for the Guadalupe may be tied with very basic materials; i.e. Zebras, G.E.M.’s, Pheasant tail nymphs,RS2,WD40, Buggers, Squirmy Worms, eggs, etc.

My favorite book is Dave Whitlock’s Guide to Aquatic Trout Foods. It isn’t just a pattern book; it deals with all aspects of understanding trout feeding, including why flies are tied as they are.